Reaction products of diazotised 2-amin-6-nitrophenol-4-sulphonic Acid and 2-Amino-4-nitrophenol-6-sulfonic Acid, coupled with a mixture of 6-Amino-4-hydroxy-2-naphthalenesulfonic Acid and Acetylated 6-Amino-4-hydroxy-2-naphthalenesulfonic Acid, subsequently metallized with Chromium (III) Basic Sulfate and Acetic Acid, and at the end diazotised and coupled with p-Cresol, sodium salts

Endpoint summary

Description of key information

Not skin irritant

Not eye irritant

Key value for chemical safety assessment

Skin irritation / corrosion

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Eye irritation

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Respiratory irritation

Endpoint conclusion

Endpoint conclusion:

no study available

Justification for classification or non-classification

According to the CLP Regulation (EC 1272/2008) substances that have the potential to induce reversible damage to the skin following the application of a test substance for up to 4 hours are classified in Category 2 (irritating to the skin) if:

-mean value of ≥ 2.3 ≤ 4.0 for erythema/eschar or for oedema in at least 2 of 3 tested animals from gradings at 24, 48 and 72 h after patch removal or, if reactions are delayed, from grades on 3 consecutive days after the onset of skin reactions; or

-inflammation that persists to the end of the observation period normally 14 d in at least 2 animals, particularly taking into account alopecia (limited area), hyperkeratosis, hyperplasia, and scaling; or

-in some cases where there is pronounced variability of response among animals, with very definite positive effects related to chemical exposure in a single animal but less than the criteria above.

In the skin irritation test of the substance, the mean values at 24, 48 and 72 h after patch removal were lower than 2.3 (explicitly, the mean values were 0) in all animals for oedema reactions. In one animal the mean value of erythema was 0.3 and the adverse effect observed (grade 1) was reversible within 48 h.

According to the CLP Regulation (EC 1272/2008) substances that have the potential to induce reversible eye irritation are classified in Category 2 (irritating to eyes) if, when applied to the eye of an animal, a substance produces at least in 2 of 3 tested animals, a positive response of:

-corneal opacity ≥ 1 and/or

-iritis ≥ 1, and/or

-conjunctival redness ≥ 2 and/or

-conjunctival oedema (chemosis) ≥ 2,

calculated as the mean scores following grading at 24, 48 and 72 h after installation of the test material, and which fully reverses within an observation period of 21 d.

In the eye irritation test the substance resulted in an adverse effect on the conjunctivae: mean values at 24, 48 and 72 h were lower than 2 for conjunctival redness and oedema (chemosis) in all animals. These effects were reversible within 72 h in one animal and within 7 d in the other two animals. Moreover the mean values were 0 for corneal opacity and iris in all animals.

The results show that the substance is not classified for both skin and eye irritation, according to the CLP Regulation (EC n. 1272/2008).